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scotteastham
Joined: Thu Jul 29, 2010 8:05 am Posts: 78 Location: tuggerah nsw
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 Posted: Wed Sep 01, 2010 4:39 am |
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i need to know the ratios neede to run 35 inch tyers on hilux bundarah diffs and what ratio is needed for the transfer case thanks 
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scotteastham
Joined: Thu Jul 29, 2010 8:05 am Posts: 78 Location: tuggerah nsw
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 Posted: Wed Sep 01, 2010 4:40 am |
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oh in my 87 sierra with vit 1600 carby motor
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MART
Joined: Thu Apr 26, 2007 11:30 pm Posts: 282 Location: Sydney
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 Posted: Wed Sep 01, 2010 4:47 am |
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6.5's in the trans and 5.12 in the diff , Cheers Paul.
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bulldoggy
Joined: Mon May 31, 2010 7:21 am Posts: 55 Location: perth
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 Posted: Wed Sep 01, 2010 6:04 am |
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5.29 ratio for the bundy diffs as they are toyota,
_________________ 1989 1.3ltr sierra hardtop. 2" lift small exo oran
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scotteastham
Joined: Thu Jul 29, 2010 8:05 am Posts: 78 Location: tuggerah nsw
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 Posted: Wed Sep 01, 2010 6:10 am |
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MART wrote: 6.5's in the trans and 5.12 in the diff , Cheers Paul. will thiss be super slow in low range
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lump_a_charcoal

az supporter
Joined: Wed Feb 28, 2007 10:30 pm Posts: 4454 Location: Botany, NSW
Vehicle: MY2019 Jimny
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 Posted: Wed Sep 01, 2010 6:36 am |
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TZAR

az supporter
Joined: Tue Aug 01, 2006 11:30 pm Posts: 3461 Location: licking some windows
Vehicle: LJ20 LJ50
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 Posted: Wed Sep 01, 2010 6:58 am |
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first gear 3.65
low range 6.5
diff ratio 5.29
equals 125.05 reduction
so at 2000 rpm your rear wheels will be doing 16 revolutions per minute
assuming that a 35 inch tyre has a diameter of 2793mm that means your car will travel 44688mm (44.688 metres) per minute or 2681280mm (2681.280metres) per hour which equals 2.68 km/h
That is really slow enough. That is slower than walking pace.
_________________ Camels have nice toes
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scotteastham
Joined: Thu Jul 29, 2010 8:05 am Posts: 78 Location: tuggerah nsw
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 Posted: Wed Sep 01, 2010 7:07 am |
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TZAR wrote: first gear 3.65 low range 6.5 diff ratio 5.29 equals 125.05 reduction
so at 2000 rpm your rear wheels will be doing 16 revolutions per minute assuming that a 35 inch tyre has a diameter of 2793mm that means your car will travel 44688mm (44.688 metres) per minute or 2681280mm (2681.280metres) per hour which equals 2.68 km/h
That is really slow enough. That is slower than walking pace.
thanks for ur help
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11_evl
Joined: Tue Apr 10, 2007 11:30 pm Posts: 846 Location: logan reserve, Brisb
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 Posted: Wed Sep 01, 2010 8:10 am |
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or the more common 4.88 diff gears
unless you are still using the bunderea front which is hi-pinion, finding 4.88 hi-pinion is harder
_________________ 92 sierra, 40" treps, full hydro, F&R steer, 106"W
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alex

az supporter
Joined: Sat Aug 16, 2008 11:30 pm Posts: 2151 Location: Brissy
Vehicle: Nissan
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 Posted: Wed Sep 01, 2010 8:25 am |
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TZAR wrote: first gear 3.65 low range 6.5 diff ratio 5.29 equals 125.05 reduction
so at 2000 rpm your rear wheels will be doing 16 revolutions per minute assuming that a 35 inch tyre has a diameter of 2793mm that means your car will travel 44688mm (44.688 metres) per minute or 2681280mm (2681.280metres) per hour which equals 2.68 km/h
That is really slow enough. That is slower than walking pace.
but you do have 5 gears 
_________________ Pearce-toff Racing
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germo
Joined: Sat Mar 27, 2010 10:30 pm Posts: 18 Location: newcastle
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 Posted: Wed Sep 01, 2010 10:48 am |
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i had 1.6l carby
5 speed
6:1 xfer
5.29 diffs
37" tyres
revved - 4000 rpm @ 100kph
worked well, same as above there is five gears and about 6500 rpm to play with!
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Fatzook

az supporter
Joined: Sat Oct 27, 2007 11:30 pm Posts: 14977 Location: The Hills
Vehicle: Vitara, NGV
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 Posted: Wed Sep 01, 2010 10:57 am |
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My bundy diffs were 4.55 with HP front. With 36's and auto it was fine. Standard 75 series transfer gears.
_________________ 2013 GV 1998 SV420 ute
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